The first (extremely limited) batch of 20L Single Layer packs is made from Blackout Dyneema® - a super lighweight, semi-see through Dyneema® laminate fabric.
More Dyneema® fabric options will be coming in the next couple of months! Email me at luke at trucedesigns dot com if you want a 20SL pack made for you from something in particular.
6 oz. / 170g w/o straps attached
10 oz / 283 g w/straps attached